Podcast:CBS Radio Mystery Theater (Restoration) Published On: Wed Apr 08 2026 Description: 0493 - Checkmate (6/21/1976)Written by Ian Martin. Directed by Himan Brown.Cast: Marian Haley; Robert Dryden; Court Benson; Bryna Raeburn.A rookie police detective and her crotchety veteran partner encounter an apartment building full of peculiar suspects while investigating the murder of a genius chess player's friend and frequent opponent.